> For the complete documentation index, see [llms.txt](https://help.decodeage.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.decodeage.com/decode-age-support/supplement-information/methylage-b/what-is-a-methylated-b-complex.md). # What is a Methylated B-Complex? A methylated B-complex is a B-vitamin supplement that contains one or more B vitamins in their bioactive (active) forms. These forms are already in a state that the body can readily use, reducing the number of conversion steps needed before they become biologically active. The most common methylated forms include: * **Vitamin B9:** L-5-Methyltetrahydrofolate (L-5-MTHF or methylfolate) * **Vitamin B12:** Methylcobalamin * **Vitamin B6:** Pyridoxal-5-Phosphate (P-5-P) Some formulations also include active forms of Vitamin B1 (Benfotiamine), Vitamin B2 (Riboflavin-5'-Phosphate), and Vitamin B5 (Pantethine). ### Why are methylated vitamins used? Bioactive forms require fewer conversion steps before participating in normal biological processes such as: * Energy metabolism * Healthy methylation * Nervous system function * Red blood cell formation * Homocysteine metabolism For many healthy people, conventional forms can still be effective. However, active forms may be preferred for individuals with increased nutritional demands, reduced nutrient absorption, certain genetic variations such as MTHFR, or those looking for a more advanced B-complex formulation. ### Who may benefit from a methylated B-complex? A healthcare professional may recommend a methylated B-complex for people who: * Follow a vegetarian or vegan diet * Are over 40 years of age * Experience higher physical or mental demands * Take medications that may affect B-vitamin status * Have been advised that they carry MTHFR variants ### Is a methylated B-complex better? Not necessarily for everyone. The most appropriate supplement depends on your diet, health status, medications, and nutritional needs. Active forms simply provide vitamins in forms that the body can use more directly. #### Learn More If you're looking for a bioactive B-complex formulated with all eight essential B vitamins in active forms, explore Decode Age MethylAge-B™. It combines L-5-MTHF, dual-form Vitamin B12, Benfotiamine, Riboflavin-5'-Phosphate, Pyridoxal-5-Phosphate (P-5-P), TMG, CDP-Choline, Pantethine and Myo-Inositol to support healthy methylation, energy metabolism, brain function, nerve health and daily vitality. **View MethylAge-B™** --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://help.decodeage.com/decode-age-support/supplement-information/methylage-b/what-is-a-methylated-b-complex.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.